Search  for anything...

3in1 Weekly Hot Tub Cleaner, Conditioner, Clarifier - Hot Tub Chemicals for Standard & Inflatable Spas - Spa Chemicals for Crystal Clear & Sparkling Clean Water - Made in USA (32oz)

  • Based on 4,571 reviews
Condition: New
Checking for the best price...

Buy Now, Pay Later


As low as $10.00 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Jul 28
Order within 6 minutes
Available payment plans shown during checkout

Size: 16-Weeks (32oz)


Features

  • 3-IN-1 WATER CARE: Our weekly maintenance treatment includes a combination of hot tub cleaner, conditioner, and clarifier. Specially formulated to deliver sparkling clean and crystal clear water and ensure a soft and silky water feel for your next soak!
  • KEEPS YOUR HOT TUB FEELING FRESH: Helps prevent gunk and buildup from accumulating in your plumbing system, jet lines and filter. Use weekly to protect all your hot tub parts and extend the life of your spa.
  • EASY TO USE: Simply add 2oz of 3-IN-1 Weekly Care for every 500 gallons of water and turn jets on high for 30 seconds. Repeat Ouster 3-in-1 Weekly Care every 7 days thereafter. For best results, use together with Ouster Hot Tub Restoration to deep clean hot tub plumbing, jets, and tubes.
  • WORKS ON ALL SPA TYPES: Formulated for today's premium acrylic hot tubs, inflatable hot tubs and jetted portable spas.
  • QUALITY YOU CAN TRUST: Ouster spa and hot tub chemicals are made of the highest quality ingredients and proudly manufactured in the USA. Give our 3-IN-1 a go and your spa will thank you!

Brand: Bio Ouster


Item Weight: 32 Ounces


Item Form: Liquid


Product Benefits: Maintains clean and clear water, conditions prevents buildup, protects hot tub plumbing


UPC:


Brand: Bio Ouster


Item Weight: 32 Ounces


Item Form: Liquid


Product Benefits: Maintains clean and clear water, conditions prevents buildup, protects hot tub plumbing


UPC: 859191007271


Number of Items: 32


Unit Count: 32 Count


Item Weight: 2 pounds


Manufacturer: Bio Ouster


Country of Origin: USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jul 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Nothing Better
Size: 16-Weeks (32oz)
I've been using Bio Ouster 3 in1 Weekly Hot Tub Cleaner, Conditioner, Clarifier for about 6 weeks now. I promise my Hot Tub is cleaner and clearer than ever. Even my filter looks good. No more guessing with PH balance, water clarifier, ect. Notes: use weekly as directed, continue to use Bromine tables. After using Bio Ouster, you very likely will have to wipe down the sides and use a pool net to remove the scum buildup from the foam, which is an easy clean. I use a little deformer to help concentrate the cleaning process. Works quick, cleaning time takes about 10 minutes. No bad smells, great product, worth every penny of my money. ... show more
Reviewed in the United States on May 21, 2025 by Amazon Customer Amazon Customer

  • works great
Size: 4-Week Kit (8oz)
This stuff is very good. Works as it should but need a packet every week for the hot tub until you get chemicals right. Highly recommend.
Reviewed in the United States on May 29, 2025 by Mike

  • Simple chemicals for spa
Size: 4-Week Kit (8oz)
Seems to work ok. Easier than using separate chemicals
Reviewed in the United States on May 8, 2025 by Bryan F

  • Best all in one spa/hot tub cleaner
Size: 8-Weeks (16oz)
Solid product it works wonders on inflatable spa easy directions. Works fast and is probably the best all in one cleaning solution to buy. Last about a month with regular usage so I’ll definitely be recommending and buying.
Reviewed in the United States on May 22, 2025 by David B.

  • A must have
Size: 4-Week Kit (8oz)
This product works extremely well in my hot tub
Reviewed in the United States on May 25, 2025 by Mamabear

  • Empty pack.
Size: 4-Week Kit (8oz)
I ordered the 4 pack. However one of the packs came empty. It wasn't cut open, it looks like it just leaked out but there was no water dmaage to the box. Disappointed that I paid for 4 but can only use 3.
Reviewed in the United States on May 6, 2025 by Mackenzie Brainard

  • Great product easy to use
Size: 8-Weeks (16oz)
Great product
Reviewed in the United States on May 29, 2025 by Beverly

  • Amazing!
Size: 8-Weeks (16oz)
Stuff works amazing! At first I had clumps of orange but later found out it was the rust from the well water. The next day my hot tub was so clean and the side walls were silky smooth!
Reviewed in the United States on May 2, 2025 by Ashlee Bower

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...